Snowball Earth
How scientists discovered that unique Scottish rocks record when Earth was first encased in ice.
Crucial Building Blocks of Life on Earth Can More Easily Form in Outer Space
A special group of molecules, known as peptides, can form more easily under the conditions of space than those found on Earth.
Earth Isn’t the Only Planet With Seasons
But they can look wildly different on other worlds.
How Plate Tectonics Shook Life into Existence
The cycles of life all rely on the dynamism of the Earth’s crust.
The Woman Who Found the Earth’s Inner Core
Inge Lehmann was the seismologist and mathematician who figured out what the Earth's core was actually made of.
What Happens if Earth’s Magnetic Poles Reverse?
What would happen if the Earth's magnetic poles flipped? Earth’s magnetic poles have a long history of switching from North to South and back again.
Kepler Finds Truly Earth-like World
The Kepler telescope discovers a habitable planet.